@kano1957 The tutorial is correct. The balloons do not represent atoms; the two white balloons in the H2O model represent the two pairs of non-bonding electrons. This is because H2O has 8 valence electrons (2x1 for H + 6 for O). Four of those electrons are used to create bonds (red) with hydrogen...
@kano1957 The tutorial is correct. The balloons do not represent atoms; the two white balloons in the H2O model represent the two pairs of non-bonding electrons. This is because H2O has 8 valence electrons (2x1 for H + 6 for O). Four of those electrons are used to create bonds (red) with hydrogen...